JPH0133447Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a tape loading device installed between a feed roll and a supply reel in an automatic or semi-automatic packaging machine.

(Prior Art) The operation of inserting the tape tip into the feed roll of a packaging machine is extremely troublesome and dangerous.

Conventionally, a tape guide with a U-shaped cross section was interposed between the feed roll and the feed roll, and the tape tip was inserted into the feed roll. After insertion, the tape guide was removed outside the machine to ensure a tape retention space. things are being done.

Since the operation of ejecting and retracting the tape guide is usually performed by an electromagnetic mechanism, the structure is complicated, resulting in high cost, and there are disadvantages in that it is prone to failure.

(Purpose) The present invention provides a tape loading device in which a guide bar is provided in a tape retention box, which serves as a guide bar when the tape is inserted, and serves as the bottom plate of the retention box after insertion. When activated, the tension force of the tape is used to force the device to lie down.

(Structure) In the present device, a feed roll is provided on the tape reel side of a tape retention box installed between a feed roll and a tape reel, and a bent portion is located outside an imaginary line connecting the roll and the feed roll. A guide bar that can be collapsed is pivotally mounted in the tape retention box, and the circumferential speed of the feed roll is set higher than the circumferential speed of the feed roll, and the guide bar is forcibly collapsed by the tension of the tape. This allows for a large retention space within the retention box.

(Example) Hereinafter, the present invention will be explained based on the example shown in the drawings.

Reference numeral 1 denotes a packing machine, 2 a stand for placing objects to be packed, and 3 a tape guide frame provided around the object A to be packed.

Reference numeral 4 denotes a tape retention box having a tape insertion port 4a at the bottom and a tape delivery port 4b at the top.

A roll 5 feeds the tape from the reel 20 into the retention box, and is composed of a drive roller 5a that can rotate forward and backward, and a driven roller 5b that presses the tape 6 against the roller 5a.

Reference numeral 7 denotes a feed roll provided near the tape outlet, 7a a drive roller rotating at a faster circumferential speed than the feeding roll 5, and 7b a driven roller.

Reference numeral 8 denotes a tape guide bar having a base 8a pivoted by a pivot 9 in the vicinity of the tape insertion opening 4a and having a bent portion or curved surface portion 8' on the tip 8b side. A tape guide path 10 is formed between the tape guide 4c and the inner surface.

The bent portion 8' of the tape guide bar 8 is connected to the feed roll 7 or the feed assist roll 1 for changing the insertion angle.
It is necessary that the roller be provided outside the straight line connecting the feed roll 8 and the feed roll 5.

Further, it is preferable that the guide bar is designed such that the retention space 11 in the retention box has a desired volume when the guide bar is in a prone state.

Reference numeral 12 denotes a detector that detects whether the guide bar is in a prone state or the weight of the remaining tape on the guide bar, and stops the feeding roll 5 when the remaining tape exceeds a predetermined weight.

Reference numeral 13 denotes a handle protruding from the side of the guide bar, which protrudes to the outside through a guide groove 14.

17 is a spring for regulating the standing position, which is stretched between pins 15 and 16;
is installed so that this spring force does not act on the guide bar when it is in the prone position.

18a and 18b are feed assist rolls which, together with a guide chute 19, adjust the angle at which the tape is fed to the feed roll 7;
It is driven at the same circumferential speed as the feed roll.

21 is a tape end stopper, 22 is a sealer unit, and 23 is a slide table.

Next, the operation of the above device will be explained.

First, as shown in FIG. 3, when the handle 13 is moved to a position where it collides with the upper end 14a of the elongated hole 14, the tape guide bar 8 is raised to the position shown by the solid line in FIG. A tape guide path 10 is formed between the tape storage box 4 and the rear wall 4c, and the tape storage box 4 is held by a spring 17 so as not to fall down unnecessarily from this upright position.

The assist rolls 18a, 18b and the feed rolls 7a, 7b are rotating in the tape feeding direction, and the feeding rolls 5a, 5b are stationary.

In this state, the leading end of the tape 6 is inserted into the feed rolls 5a, 5b and driven to rotate.

The tape 6 passes through the tape guide path 10 to reach the tape outlet 4b, and is sent to the feed roll 7 via the assist roll 18 and the guide chute 19.

Since the peripheral speed of the feed roll 7 is higher than the peripheral speed of the feeding roll 5, the difference in peripheral speed causes the tape 6 to
is tensed, causing the tape guide bar 8 to fall down against the spring force of the spring 17, and a tape retention space 11 is formed above the fallen tape guide bar 8 (as indicated by the chain line in FIG. 2). shown).

When the leading edge of the tape 6 goes around the tape guide frame 3 and reaches the tape stopper 21, the assist roll 18 and the feed roll 7 stop rotating, and the rising rod (not shown) of the sealer unit 22 stops the leading edge of the tape 6. While pressing and fixing the tape 6 to the table 23, the feed roll 7 rotates in the opposite direction to tighten the tape 6.

The tape 6 pulled back by this tightening is bent and retained in the space 11 above the tape guide bar 8.

When the winding of the tape 6 is completed, the assist roll 18 and the feed roll 7 stop rotating, and the sealer unit 22 is activated to cut and bond the tape 6 wrapped around the article A to be packaged.

On the other hand, the feeding roll 5 continues to rotate, and the tape 6 is preliminarily fed into the tape retention space 11 from the tape insertion opening 4a.

When the preliminary feeding amount of the tape 6 by the feed roll 5 reaches a predetermined amount, the detector 12 detects the weight and stops the rotation of the feed roll 5.

In this case, the tape guide bar 8 serves as the bottom plate of the retention box and also acts as a scale rod.

The retained tape is then drawn out by the rotation of the feed roll in the next process.

(Effects) The device of the present invention has a base 8a in the tape retention box 4.
A tape guide bar is provided that is pivoted near the tape insertion opening so that the tip side can be inverted along the side wall of the tape retention box, and the tape guide bar that is erected upward and the inner surface of the tape retention box are connected. A tape guide path from the tape insertion port to the tape output port is formed in between, and the tape guide bar is forcibly laid down by feeding the tape by the feed roll, so that the tape is pasted above the tape guide bar. Since a tape retention space including a guide path is formed, the space inside the box can be used effectively.

In the present device, there is no need for a solenoid or the like that could cause a malfunction, and the guide bar can be easily operated from the outside.

Further, unlike the tape guide of the conventional device, the tape is not removed to the outside of the tape retention box, so the area around the tape retention box can be used effectively.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of the present device, FIG. 2 is a longitudinal sectional view of the main part, and FIG. 3 is an external view of the device. 4... Tape retention box, 5... Feeding roll,
7...Feed roll, 8...Tape guide bar,
10... Tape passage, 11... Tape retention space,
12... Retention tape amount detector.

Claims (1)

[Claims for Utility Model Registration] (1) A tape retention box having a tape insertion port with a tape feed roll at the bottom and a tape output port toward the feed roll at the top, the base of which is pivoted near the tape insertion port. A tape guide bar is provided, the tip end of which is positioned outside an imaginary straight line connecting the feed roll and the feed roll, and is capable of falling down along the side wall of the tape retention box, and the feed roll moves at a faster speed than the feed roll. When the tape guide bar is rotated, the tape guide bar is forcibly laid down, and when the tape guide bar is erected, a tape guide path is formed between the tape guide bar and the inner surface of the tape retention box. At the same time,
A tape loading device for a packaging machine, which forms a tape retention space above a tape guide bar when the tape is laid down, and the tape guide bar supports the retention tape. (2) The tape loading device according to claim 1, wherein a detector for controlling the preliminary feeding amount of the tape is provided in the tape retention box.